Telephone-switch.



N- 85l,994. PATENTED APR. 30, 1907.

' T. S. MOUNT.

TELEPHONE SWITCH. APPLICATION FILED BEPT.19,1903

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UNITED STATES PATEN T @FFTGE.

TIMOTHY S. MOUNT, OF RHOME, TEXAS.

TELEPHONE-SWITCH.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed September 19,1903. Serial No. 173,762.

' Rhome, Texas, have invented certain new and useful Improvements in Telephone- Switches, of which the following is a specification.

This invention relates to switches for telephones and more particularly to shifting devlces for short-circuiting certain classes of lines, and the object is to provide a system of cutting off communication in what are called party lines whereby conversations will be private on such lines and whereby the capac ity of the lines is increased,-making conversations more distinct and clear.

Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application and specification.

Figure 1 is a diagrammatic view in detail, showing a broken section of a box and showing the shifting block partly in section. Fig. 2 is a face view of the shifting block. Fig. 3 is a view of the interior of the side of the box on which the contacts are mounted.

Similar characters of reference are used to indicate the same parts throughout the several views:

This invention consists in an attachment to be applied to the telephone boxes already in use.

The numeral 5 indicates a box of usual construction. A shifting block 6 is pivoted to the inside of the box by means of a pivot bolt 7, holes 8 and9 being made in the block 6 and the box 5 for the bolt 7. The box 5 has, instead of the usual vertical slot, a V- shaped slot 10 for the hook 11 to move up and down. The block 6 has also a slot 12 for the hook 11. The block 6 is rocked on the pivot bolt 7 by reason of the V-shaped slot 10 which causes the hook 11 to move to the left or right as the hook 11 goes up in the left or right branch of the slot 10. The hook 11 going up in the slot 12 of the block will cause the slot 12 to register with the slot 10. The block.6 carries contact making devices and all the box lines or aims are connected to I this block. The contacts are mounted on the block 6 between said block and the wall 5 of the box. The bell contacts 13 and 14 are shown in Fig. 2, the face of the block 6 being shown in that view. Wires 15 and 16 are connected with the contacts 13 and 14 respcctively and then passed back through the block 6. The wire or line 17 is connected to erator 19. A shunt wire'20 is connected to the generator 19 at two dillcrent points and the wire 15 is connected to the shunt wire 20. This completes the bell circuit of the telephone from the contacts 13 and 1 1. The block 6 carries the line contacts 21 and 22.

The circuit is connected and disconnected by means of the hook 11 which is pivotally mounted in the box 5 and a spring 23 is prol vided for pressing the hook 11 up when the receiver 24 is removed from the hook. The line contact 22 is connected with the hook 11 by means of a line 25. The line contact 21 is connected with the receiver 24 by means of the line 26 which line also connects with the secondary induction coil 27 and primary induction coil 27 and the transmitter 28. The transmitter and the batteries 29 are connected by means of a wire 30. The drawings show two contacts for the hook 11. One contact 31 is connected with the secondary induction coil 27 by means of the line or wire 32. The other contact 33 is connected with the batteries 29 by means of the line or wire 34. When the receiver is removed from the hook 11 the hook will rise up and rest against 1 the contacts and thus complete a circuit through the line wires 1 and 2 or through the line wires 3 and 1, as may be determined by the shifting block 6. The wire 1 is connected to a spring contact 35. The wire 2 is connectcd to the spring contact 36. The line 3 is connected to the spring contact 37, and the line 4 is connected to a spring contact WVhen the block 6 is in its normal position, that is, when the telephone is not in use, it stands in a verticalposition and the contacts 36 and 38 engage the line contact 39 so that the circuit throrgh the line wires 2 and 4 is complete or unbroken. At the same time the circuit throrgh line wires 3 and 4 is complete through the bell 18 by reason of the contacts 13 and 14, contact 37 resting against contact the mechanism of the bell 1S and to the gen- 13 and contact 35 resting against contact 14.

"short and the line wires only when the receiver is removed from the hook 11 and the hook 11 goes up in one branch of the slot 10. The bell circuit is cut out when the talking connections are cut in.

If a party wished to communicate with another party on lines 1 and 2, he would alter ringing up the wanted party, pass the hook 11 up slot 40. This would throw contacts 35 and 36 against the line contacts 21 and 22 reand would throw the bar 44 in spectiv'ely 7 contact with the contacts 38 and 37 and thus circuit lines 3 and 4 and complete the circuit of 1 and 2 through the box, receiver and transmitter. If a party wishes to talk to another party on lines 3 and 4 he would, alter properly ringing up the wanted party, pass the hook 11 up slot 41. The bar 43 would then short-circuit lines 1 and 2 and the circuit would be completed through the lines '3 and 4 by means of the contacts 37 and 38 coming in contact with line contacts 21. and 22. circuite'd no one on those lines could hear the conversation of the person at the box with the person on lines 3 and 4, and the same is true of lines 3 and 4 when they are short cir- 'cuited. Nobody on those lines could hear a conversation of the person at the box with a person on lines 1 and 2. If a person at the box is talking with a person at the third station from the box, a person at the second box and normally maintaining a circuit through the bell of the box and the line wires, and a receiver hook operatively connected to said shifting mechanism whereby the operator can by the removal of the receiver from the hook disconnect the bell circuit, shortcircuit one end of the line connections with 1 said box, and complete a circuit through the W hen the line wires 1 and 2 are short- 3 station could not hear the conversation be- 1 cause when he would take his receiver down he would cut the line and break the circuit. Short circuiting the unused portion of the line in this manner enables parties who are located on this unused portion to call and talk with each other without waiting for the first party to finish his conversation as he is at such time in no way connected to this unused portion. Thus the capacity of the line is increased.

Various changes may be made in the a rrangement of the shifting or cut out mechanism without departing from my invention.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is,

1. Ina telephone box provided with a bell, a transmitter, a receiver, and suitable electrical connections; switching mechanism and a hook for said receiver operative'ly connected to said switching mechanism and to said receiver whereby the operator can by the removal of said receiver from said hook cause said switching mechanism to short-circuit one of the sets of lines leading to said box and to make electrical connection with the other set of lines leading to said box.

'2. In a telephone box of the character deother end of the line connections.

4. In a telephone box or the character described provided. with party line terminals and suitable connections, mechanism for shortcircuiting one end of the said party line connections and for completing a circuit with the other end of said party line connections at the will of the operator. 5. In a telephone switch provided with party line terminals and party line connections with said terminals; a receiver, a shifting mechanism for each terminal and means for operating said mechanism manually whereby one end of the party line connections may be short-circuited and a circuit completed with the other end of said line connections by removing the receiver from the box mechanism.

6. In a telephone provided with a receiver, a transmitter, a plurality of line connections, and a bell; a hook for said receiver and switching mechanism operatively connected with said hook, said receiver completing a circuit through said switching mechanism, and. said hook, when said receiveris removed from said hook, automatically short-circuiting one end of the line connections with said box and completing a circuit with the other end of the line connections at the will of the operator.

7. In a telephone box provided with a receiver, a bell, a transmitter, and party line connections; a shifting block pivotally mounted in said box and carrying contacts for all of the connections of said box, a hook for said receiver pivotally mounted in said box and passing through a slot in said block, and controlling means for operating said hook consisting of a \l-shaped slot in the side of said box.

8. In. a telephone box of the character described, a bell circuit, suitable line connections, a shifting block pivotally mounted in said box and carrying means for making and presence of two Witnesses, this 9th day of breaking thehbell giriuig, Ilneans for short- September, 1903. circuit-in eit er en 0' t e ine connections, and meafhs for simultaneously making a cir- TIMOTHY MOLL l 5 cuit of the switch with the other end of the Witnesses:

line connections. E. B. RANDLE, In testimony whereof, I set my hand in the I A. L. JACKSON. 

